A group of 100 items has a mean of 60. If the mean of the first 50 items is 61, find the mean of the other 50 items

Answer 1

The total sum of the 100 items is 100 * 60 = <<100*60=6000>>6000.
The sum of the first 50 items is 50 * 61 = <<50*61=3050>>3050.
The sum of the other 50 items is 6000 - 3050 = <<6000-3050=2950>>2950.
The mean of the other 50 items is 2950 / 50 = <<2950/50=59>>59. Answer: \boxed{59}.